Enlarge (credit: Francesco Carta fotografo | Moment)

An Indiana cop has resigned after it was revealed that he frequently used Clearview AI facial recognition technology to track down social media users not linked to any crimes.

According to a press release from the Evansville Police Department, this was a clear "misuse" of Clearview AI's controversial face scan tech, which some US cities have banned over concerns that it gives law enforcement unlimited power to track people in their daily lives.

To help identify suspects, police can scan what Clearview AI describes on its website as "the world's largest facial recognition network." The database pools more than 40 billion images collected from news media, mugshot websites, public social media, and other open sources.